<template>
  <view class="cart-container" v-if="cart.length !== 0">
    <my-address></my-address>
    <!-- 购物车商品列表的标题区域 -->
    <view class="cart-title">
      <!-- 左侧的图标 -->
      <uni-icons type="shop" size="18"></uni-icons>
      <!-- 描述文本 -->
      <text class="cart-title-text">购物车</text>
    </view>
    <!-- 商品列表区域 -->
    <!--   <block v-for="(goods, i) in cart" :key="i">
      <my-goods
        :goods="goods"
        :showRadio="true"
        @radio-handler="radioHandle"
        @num-handler="numHandle"
      ></my-goods>
    </block> -->
    <uni-swipe-action>
      <block v-for="(goods, i) in cart" :key="i">
        <uni-swipe-action-item
          :right-options="options"
          @click="swipeClickHandle(goods.goods_id)"
        >
          <my-goods
            :goods="goods"
            :showRadio="true"
            @radio-handler="radioHandle"
            @num-handler="numHandle"
          ></my-goods>
        </uni-swipe-action-item>
      </block>
    </uni-swipe-action>

    <!-- 结算区域 -->
    <my-settle></my-settle>
  </view>
  <!-- 空白购物车区域 -->
  <view class="empty-cart" v-else>
    <image src="/static/cart_empty@2x.png" class="empty-img"></image>
    <text class="tip-text">空空如也~</text>
  </view>
</template>
<script>
import badgeMixins from '@/mixins/tabBar-badge.js';
import { mapState, mapMutations } from 'vuex';
export default {
  mixins: [badgeMixins],
  data() {
    return {
      options: [
        {
          text: '删除',
          style: {
            backgroundColor: '#c00000'
          }
        }
      ]
    };
  },
  methods: {
    ...mapMutations('m_cart', [
      'updateGoodsState',
      'updateGoodsCount',
      'deleteGoods'
    ]),
    swipeClickHandle(id) {
      // 点击左滑之后的删除按钮就会触发此函数
      // console.log(444);
      this.deleteGoods(id);
    },
    numHandle(e) {
      // 先接收到子组件传过来的数据
      console.log(e); // {goods_id: 38, goods_count: 5}
      // 拿着数字输入框最新的值 去修改vuex中的cart数组:
      this.updateGoodsCount(e);
    },
    radioHandle(e) {
      console.log(e); // {goods_id: 38, goods_state: false}
      // 更改当前商品(goods_id)在vuex中的cart数组中的状态值goods_state:
      this.updateGoodsState(e);
    }
  },
  computed: {
    // 将 m_cart 模块中的 total 映射为当前页面的计算属性
    ...mapState('m_cart', ['cart'])
  }
};
</script>

<style lang="scss">
.cart-title {
  height: 40px;
  display: flex;
  align-items: center;
  font-size: 14px;
  padding-left: 5px;
  border-bottom: 1px solid #efefef;
  .cart-title-text {
    margin-left: 10px;
  }
}
.cart-container {
  padding-bottom: 50px;
}
.empty-cart {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding-top: 150px;

  .empty-img {
    width: 90px;
    height: 90px;
  }

  .tip-text {
    font-size: 12px;
    color: gray;
    margin-top: 15px;
  }
}
</style>
